Ravensburger Construction Toy GraviTrax POWER Additional Parts Switch Trigger Ages 26214 4 Birthday & 8+

This set includes a "switch" that changes the direction of the ball and a "trigger" that sends a signal to other parts when the ball passes through. When the trigger and switch lights are the same color, the switch will flip when the ball passes the trigger. A starter set is required to play with this product. All Gravitrax series products are compatible with each other. Uses 3 AAA batteries (not included). Uses 2 switches and 1 trigger.